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thionic acid

American  

noun

Chemistry.

  1. any of the five acids of sulfur of the type H 2 S n O 6 , where n is from two to six.

Etymology

Origin of thionic acid

First recorded in 1875–80

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.